Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark A. Rosenthal, M.D.

Pediatrics Physician in Gales Ferry, CT · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1144319690

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Registry record

Entity type Individual (Type 1)

Name Mark A. Rosenthal

Credential M.D.

Sex Male

Practice address 1527 Route 12, Box 608, Gales Ferry, CT, 06335

Phone (860) 464-7248

Fax (860) 464-0125

Enumeration date Oct 12, 2006

Last updated in NPPES Jan 22, 2013

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 037353 (CT) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
01037353	Other	-	CIGNA
OV5871	Other	-	HEALTH NET
010037353CT0	Other	-	BLUE CROSS
761223	Other	-	CONNECTICARE
001373539	Medicaid	CT	-
1204724	Other	-	UNITED HEALTH CARE

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mark Rosenthal?

The National Provider Identifier (NPI) for Mark Rosenthal is 1144319690, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Rosenthal practice?

The practice location on file with NPPES is in Gales Ferry, CT. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-22.